ALTA/LITTLE COTTONWOOD CANYON HRRR-DERIVED FORECAST GUIDANCE *************************************************************** * THIS IS AN EXPERIMENTAL, AUTOMATED, AND UNOFFICIAL FORECAST * *************************************************************** CREATED/MAINTAINED BY THE STEENBURGH GROUP DEPARTMENT OF ATMOSPHERIC SCIENCES UNIVERSITY OF UTAH Contact: jim.steenburgh@utah.edu WETBULBZERO, 1H QPF, ACCUM QPF DIRECTLY FROM HRRR COLLINS SNOW RATIO/H2O, MT BALDY T/RH, MT BALDY WIND, 1H SNOW, and ACCUM SNOW based on machine learning including UU RF SLR algorithm Based on 12Z 31-Mar-2025 intialized HRRR FORECAST HOURS 0-48 FHR VALID MOUNTAIN TIME COLLINS T MT BALDY T/RH MT BALDY WIND WETBULBZERO SLR/H2O 1H QPF / 1H SNOW / ACCUM QPF / ACCUM SNOW 0 06 AM Mon Mar 31 2025 26F 21F / 77% SSW 25 G 45 MPH 7200 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 1 07 AM Mon Mar 31 2025 26F 21F / 74% SW 27 G 47 MPH 7300 FT 12:1 / 8% 0.00" / 0.0" 0.00" / 0.0" 2 08 AM Mon Mar 31 2025 26F 21F / 78% SW 25 G 44 MPH 7300 FT 11:1 / 9% 0.00" / 0.0" 0.00" / 0.0" 3 09 AM Mon Mar 31 2025 27F 21F / 85% SW 27 G 48 MPH 7200 FT 8:1 / 12% 0.00" / 0.0" 0.00" / 0.0" 4 10 AM Mon Mar 31 2025 28F 20F / 91% SW 23 G 42 MPH 7300 FT 9:1 / 11% 0.01" / 0.1" 0.01" / 0.1" 5 11 AM Mon Mar 31 2025 28F 20F / 92% SW 21 G 38 MPH 7500 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.1" 6 12 PM Mon Mar 31 2025 30F 20F / 89% SW 19 G 36 MPH 7500 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 7 01 PM Mon Mar 31 2025 32F 22F / 76% WSW 22 G 40 MPH 7300 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 8 02 PM Mon Mar 31 2025 32F 21F / 72% WSW 22 G 39 MPH 7100 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 9 03 PM Mon Mar 31 2025 33F 23F / 62% SW 24 G 45 MPH 7300 FT 9:1 / 11% 0.00" / 0.0" 0.01" / 0.1" 10 04 PM Mon Mar 31 2025 33F 23F / 61% SW 21 G 38 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 11 05 PM Mon Mar 31 2025 33F 24F / 60% SW 24 G 46 MPH 7600 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 12 06 PM Mon Mar 31 2025 32F 24F / 59% SW 26 G 48 MPH 7400 FT 10:1 / 10% 0.00" / 0.0" 0.01" / 0.1" 13 07 PM Mon Mar 31 2025 30F 22F / 72% WSW 25 G 43 MPH 7400 FT 11:1 / 9% 0.00" / 0.0" 0.01" / 0.1" 14 08 PM Mon Mar 31 2025 26F 18F / 98% W 24 G 39 MPH 6900 FT 12:1 / 8% 0.02" / 0.2" 0.03" / 0.3" 15 09 PM Mon Mar 31 2025 25F 17F / 97% WNW 25 G 43 MPH 6200 FT 12:1 / 8% 0.13" / 1.6" 0.16" / 1.9" 16 10 PM Mon Mar 31 2025 22F 13F / 97% WNW 30 G 47 MPH 6100 FT 10:1 / 10% 0.18" / 1.8" 0.34" / 3.7" 17 11 PM Mon Mar 31 2025 19F 11F / 99% WNW 34 G 55 MPH 5400 FT 14:1 / 7% 0.16" / 2.2" 0.50" / 5.9" 18 12 AM Tue Apr 01 2025 16F 8F / 96% W 27 G 43 MPH 5100 FT 13:1 / 8% 0.13" / 1.7" 0.63" / 7.6" 19 01 AM Tue Apr 01 2025 14F 7F / 95% W 30 G 46 MPH 5000 FT 14:1 / 7% 0.03" / 0.4" 0.66" / 8.0" 20 02 AM Tue Apr 01 2025 13F 6F / 94% WNW 29 G 44 MPH 4800 FT 17:1 / 6% 0.00" / 0.0" 0.66" / 8.0" 21 03 AM Tue Apr 01 2025 13F 6F / 99% WNW 22 G 33 MPH 4800 FT 17:1 / 6% 0.01" / 0.2" 0.67" / 8.2" 22 04 AM Tue Apr 01 2025 13F 6F / 99% W 21 G 32 MPH 4600 FT 17:1 / 6% 0.02" / 0.3" 0.69" / 8.5" 23 05 AM Tue Apr 01 2025 11F 5F / 95% W 18 G 29 MPH 4400 FT 20:1 / 5% 0.04" / 0.8" 0.73" / 9.3" 24 06 AM Tue Apr 01 2025 11F 5F / 95% WNW 17 G 25 MPH 4400 FT 20:1 / 5% 0.06" / 1.2" 0.79" / 10.5" 25 07 AM Tue Apr 01 2025 11F 5F / 88% WNW 15 G 24 MPH 4300 FT 21:1 / 5% 0.05" / 1.0" 0.84" / 11.5" 26 08 AM Tue Apr 01 2025 10F 4F / 85% W 16 G 25 MPH 4400 FT 18:1 / 6% 0.01" / 0.2" 0.85" / 11.7" 27 09 AM Tue Apr 01 2025 12F 5F / 81% W 18 G 26 MPH 4400 FT 21:1 / 5% 0.00" / 0.0" 0.85" / 11.7" 28 10 AM Tue Apr 01 2025 14F 6F / 87% W 17 G 28 MPH 4300 FT 18:1 / 6% 0.07" / 1.3" 0.92" / 13.0" 29 11 AM Tue Apr 01 2025 16F 7F / 87% WNW 20 G 34 MPH 4300 FT 16:1 / 6% 0.11" / 1.8" 1.03" / 14.8" 30 12 PM Tue Apr 01 2025 17F 7F / 95% WNW 20 G 32 MPH 4300 FT 15:1 / 7% 0.07" / 1.0" 1.10" / 15.8" 31 01 PM Tue Apr 01 2025 17F 7F / 84% W 20 G 32 MPH 4300 FT 17:1 / 6% 0.02" / 0.3" 1.12" / 16.1" 32 02 PM Tue Apr 01 2025 19F 8F / 86% W 19 G 30 MPH 4300 FT 16:1 / 6% 0.00" / 0.0" 1.12" / 16.1" 33 03 PM Tue Apr 01 2025 19F 9F / 92% W 19 G 30 MPH 4400 FT 17:1 / 6% 0.01" / 0.2" 1.13" / 16.3" 34 04 PM Tue Apr 01 2025 20F 8F / 89% W 20 G 30 MPH 4400 FT 17:1 / 6% 0.02" / 0.3" 1.15" / 16.6" 35 05 PM Tue Apr 01 2025 19F 8F / 89% W 19 G 30 MPH 4400 FT 19:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 36 06 PM Tue Apr 01 2025 17F 7F / 79% W 19 G 29 MPH 4700 FT 20:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 37 07 PM Tue Apr 01 2025 17F 8F / 83% W 17 G 27 MPH 4300 FT 19:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 38 08 PM Tue Apr 01 2025 15F 7F / 92% W 15 G 23 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 39 09 PM Tue Apr 01 2025 11F 6F / 80% W 17 G 26 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 40 10 PM Tue Apr 01 2025 10F 5F / 82% WSW 13 G 22 MPH ≤ KSLC 19:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 41 11 PM Tue Apr 01 2025 9F 5F / 80% W 14 G 18 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.15" / 16.6" 42 12 AM Wed Apr 02 2025 9F 5F / 85% W 12 G 16 MPH ≤ KSLC 15:1 / 7% 0.00" / 0.0" 1.15" / 16.6" 43 01 AM Wed Apr 02 2025 9F 5F / 87% W 13 G 17 MPH ≤ KSLC 16:1 / 6% 0.00" / 0.0" 1.15" / 16.6" 44 02 AM Wed Apr 02 2025 9F 5F / 81% WNW 15 G 21 MPH ≤ KSLC 18:1 / 6% 0.00" / 0.0" 1.15" / 16.6" 45 03 AM Wed Apr 02 2025 8F 4F / 79% WNW 14 G 17 MPH ≤ KSLC 21:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 46 04 AM Wed Apr 02 2025 8F 4F / 79% WNW 12 G 17 MPH ≤ KSLC 23:1 / 4% 0.00" / 0.0" 1.15" / 16.6" 47 05 AM Wed Apr 02 2025 7F 3F / 77% WNW 12 G 14 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 1.15" / 16.6" 48 06 AM Wed Apr 02 2025 7F 3F / 78% NW 13 G 17 MPH ≤ KSLC 22:1 / 5% 0.00" / 0.0" 1.15" / 16.6"